Quote: "then that means the character can jump 12 feet far and 4 feet high"
I can do that, so why not the character.
I can jump over 7 feet from a stance (no running), so jumping more than 12' from a jog or short run (5 or 6 steps) would be no problem.
The 4 foot height I can break from a stance too, but I wouldn't get as far.
I would be willing to bet that I could break 10 foot long and four high from 2 steps...
I am going to try now and measure the length to see how many steps I need for a 12' jump. (and remember...I'm an old man)
EDIT
I guess I am getting old...I could only hit 6'4" from a stand still (2 attempts), which is much less than I used too.
2 steps was right at 9' (1 attempt)
3 steps broke 10' (1 attempt)
I got way less than 3 feet height at the most on that last jump.
I was jumping in gravel though and not sand, so I didn't really pull my legs up for more distance.
I opted for landing on my feet without letting my butt hit the ground, so I probably lost maybe a foot for that.
So yeah, the player is more like the young me.